CN102350267A - Trailing-vortex cavitation rotating generator - Google Patents
Trailing-vortex cavitation rotating generator Download PDFInfo
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- CN102350267A CN102350267A CN2011102543032A CN201110254303A CN102350267A CN 102350267 A CN102350267 A CN 102350267A CN 2011102543032 A CN2011102543032 A CN 2011102543032A CN 201110254303 A CN201110254303 A CN 201110254303A CN 102350267 A CN102350267 A CN 102350267A
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Abstract
The invention relates to a trailing-vortex cavitation rotating generator, comprising a spindle, bearing assemblies and a shell, wherein two sides of the shell are provided with round flat plates fixed by bolts; a cylindrical cavity is formed between the shell and the round flat plates; the two round flat plates are respectively provided with a feeding hole and a discharge hole; the middle of the cavity is provided with a rotor connected with the spindle; a gap is formed among the rotor, the shell and the round flat plates; and two ends of the spindle are provided with bearing assemblies. The trailing-vortex cavitation rotating generator has the beneficial effects of simple structure, big cavitation effect, large cavitation area, high cavitation efficiency and large flux.
Description
Technical field
The present invention relates to a kind of cavitation equipment, especially a kind of trailing vortex cavitation rotating generator.
Background technology
Applied cavitation mainly contains two types in the technical field of chemical separation, and one type is ultrasonic cavitation, and another kind of is Hydrodynamic cavitation.
Ultrasonic cavitation is meant under the alternation effect of the positive negative pressure that the micro-bubble (gas nuclear) that is present in the liquid produces in the ultrasonic wave communication process, and concussion, extruding, contraction, the fracture of gas nuclear, a series of dynamic processes such as grow and crumble and fall take place.Hydrodynamic cavitation is meant flow of liquid when orifice plate or Venturi tube, because flow velocity increases suddenly, pressure is reduced to the pressure for vaporization that is lower than liquid, and cavitation takes place, and produces breaking out and crumbling and fall of bubble.To produce shock wave and microjet when cavity is crumbled and fall, produce strong cavitation effect.The Hydrodynamic cavitation technology is used in more industrial circle.Like drilling engineering of biological processing, wastewater treatment, the mixing of forced fluid liquid, oil refining and mining industry etc.The greatest problem that ultrasonic cavitation exists is that its technology mechanism is complicated, is difficult to realize industrialization.The Hydrodynamic cavitation technology is ripe at present, but its cavitation zone, cavitation efficient and flux are all lower, can't satisfy big industrialized production.
Patent No. CN201279516 discloses a kind of novel apparatus for eliminating sludge in pipe, and this device characteristic has been to use long and narrow strip blade to replace roomy blade before, because blade is long and narrow; Can improve cavitation jet pressure during current process slit; Strengthen jet impact force, the effectively shattered to pieces rate of cavity is high, reasonable in design; Easy and simple to handle, cleaning speed is fast.But this device can only be used in specific piping (for example water pipe), and cavitation zone receives pipeline restriction and less, can not promote greatly.
Patent No. CN201643998 discloses a kind of novel hydropower cavitation apparatus, and this apparatus features is in the circular cone contraction section, to be provided with aeration tube.Increased the generation of bubble greatly and increased the effect of the output of bubble, cavitation is effective.Be provided with charge pipe in retaining device inside, charge pipe one end also has many dispersion pipes.In fluid, add other additives through charge pipe,, reach and carry out effects such as physics chemical action, oxidation, sterilization functions simultaneously like washing agent, oxidant, catalyst, bactericidal agent etc.The equipment of this device is complicated, does manual work to require height, and cost is high.
Patent No. CN201261005Y discloses a kind of liquid whistle type ultrasonic cavitation nozzle; The unique distinction of this invention is simultaneously liquid whistle type ultrasonic generator structure and jet self-excited oscillation cavitation structure organically to be combined with unified; Promote cleaning and erosive force with the reinforced high pressure water jet with this; It is simple in structure, and cavitation is effective, and seriation of being convenient to produce and practical judicial convenience.But this device receives its effect on structure, and cavitation zone is little, and flux is little, is not suitable for using in the big occasion of treating capacity.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, provide a kind of simple in structure, cavitation effect is big, cavitation zone is big, cavitation efficient height and the big trailing vortex cavitation rotating generator of flux.
The present invention solves the technical scheme that its technical problem adopts: this trailing vortex cavitation rotating generator; Comprise rotating shaft, bearing assembly, housing, the housing both sides are provided with the circular flat board through bolt, form circular cylindrical cavity between housing and the circular flat board; Be respectively equipped with charging aperture and discharging opening on two circular flat boards; Be provided with the rotor that is connected with rotating shaft in the middle of the cavity, leave certain interval between rotor and housing, the circular flat board, the two ends of rotating shaft are provided with bearing assembly.
As preferably, said rotor is cylindrical, and its surface is provided with a row or the moving boss of many rows.
As preferably, said shell inner surface is smooth, or is provided with a row or arranges quiet boss more.
As preferably; The shape of said boss can be semicircle, half elliptic, triangle, crescent, cuboid, polygon, excellent capitate and can make the liquid through it produce the irregularly shaped arbitrarily of trailing vortex; It can be single shape; Or the combination in any of above two or more shapes, the height of boss and cross-sectional area can be any sizes.
As preferably, the arrangement mode of each boss can be a rectangle, or isosceles triangle.
As preferably, said boss can perhaps form other angles with its surface, place perpendicular to the surface at its place.
As preferably, said housing and rotor adopt stainless steel, carbon steel or plastics.
Inventing useful effect is:
One, utilize the high speed rotation of rotor, liquid had produced instantaneous high pressure in the place ahead of each moving boss when streaming moving boss, produced instantaneous low pressure at the rear of each moving boss.The generation of cavitation bubble will take place and crumbles and fall at these interstitial areas in moving boss gapped arrangement on rotor.Because rotor surface has the moving boss of many rows, the quiet boss of many rows is arranged on the cavity inner wall.Thereby repeatedly trailing vortex cavitation will take place, and the cavitation effect that produces is played the effect that accumulation is strengthened, so just improved cavitation intensity and cavitation efficient.
Two, flux of the present invention is big, and promptly flow area is big.Flow area of the present invention is housing and gap between rotor, just can find out from Fig. 1, and this flow area is greater than cavitation equipment such as orifice plate, Venturi tubes.The diameter of rotor changes the size that also can change flux again.Thereby flux can change according to concrete treating capacity.
Three, cavitation zone is big, on whole rotor outer surface the boss gap generation of cavitation bubble all arranged and crumble and fall, though the cavitation zone in each boss gap is little, various boss is arranged on the rotor, so total cavitation zone is very big.
Four, this apparatus structure is simple, compact in design, and light being easy to carried, and makes simply, and rate of energy is high.
Five, the present invention can select for use various structure to control cavitation effect and cavitation efficient according to concrete disposition and treating capacity; As adjust the radius and the length of rotor through exchanging rotor more; The rotating speed that also can change motor is adjusted the rotating speed of housing, and the quantity and the arrangement of moving boss and quiet boss are to adjust.Utilization rate of equipment and installations is high, and cost is low, and application is wide.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 be among Fig. 1 A-A to cutaway view;
Fig. 3 is that liquid flows into the fundamental diagram that produces trailing vortex cavitation;
Fig. 4 be among Fig. 3 A-A to cutaway view;
Fig. 5, Fig. 6 be under different situations feed liquor amount and hydroxy radical concentration concern sketch map;
Description of reference numerals: rotating shaft 1, bearing assembly 2, cavity 3, gap 4, housing 5; Moving boss 6, discharging opening 7, rotor 8, circular flat board 9, bolt 10; Quiet boss 11, charging aperture 12, the trailing vortex 13 that moving boss rear portion forms, the relative motion 14 that liquid and rotor produce, the trailing vortex 15 that quiet boss rear portion forms.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Embodiment: like Fig. 1,2, this trailing vortex cavitation rotating generator comprises rotating shaft 1, bearing assembly 2, housing 5; Housing 5 both sides are provided with the circular flat board of fixing through bolt 10 9; Form between the housing 5 and circular dull and stereotyped 9 on 3, two circular flat boards 9 of circular cylindrical cavity and be respectively equipped with charging aperture 12 and discharging opening 7, be provided with the rotor 8 that is connected with rotating shaft 1 in the middle of the cavity 3; Leave certain interval 4 between rotor 8 and housing 5, the circular flat board 9, the two ends of rotating shaft 1 are provided with bearing assembly 2.Housing 5 adopts stainless steel, carbon steel or plastic material with rotor 8.
One row or the moving boss 6 of many rows are arranged on the outer surface of rotor 8.Housing 5 inner surfaces also can have quiet boss 11.Wherein the shape of boss can be semicircle, half elliptic, triangle, crescent, cuboid, polygon, excellent capitate and can make the liquid through it produce the irregularly shaped arbitrarily of trailing vortex; It can be single shape; Or the combination in any of above two or more shapes, the height of boss and cross-sectional area can be any sizes.The arrangement mode of each boss can be a rectangle, or isosceles triangle.Boss can perhaps form other angles with its surface, place perpendicular to the surface at its place.
Liquid flows into circular cylindrical cavity 3 from charging aperture 12; Contact with high speed rotor rotated 8; Relative motion 14 takes place in the moving boss 6 on liquid and the high speed rotor 8, and liquid streamed boss, and liquid generation boundary layer separation forms trailing vortex district 13 at the boss rear; Produce local depression and cavitation takes place, produce cavitation bubble.Cavitation bubble is done mass motion with liquid, streams next boss, produces partial high pressure in the place ahead of this boss, and cavitation bubble is crumbled and fall.Simultaneously at the rear of this moving boss boundary layer separation taking place once more, form the trailing vortex district and cavitation takes place, produces cavitation bubble.So liquid constantly streamed moving boss,, constantly crumble and fall so the bubble of liquid phase hollow constantly produces also, thereby have bigger cavitation efficient constantly also alternately producing instantaneous low pressure and instantaneous high pressure.Produce shock wave, microjet, high pressure and temperature when cavitation bubble is crumbled and fall, cause a series of special physicochemical effects to produce.Liquid is flowing to the process of discharging opening 7 from charging aperture 12, and repeatedly cavitation takes place liquid, the cavitation effect that produces has been played the effect that accumulation is strengthened, thereby improved cavitation effect greatly.Simultaneously, liquid streamed the quiet boss 11 on the cavity wall, also will constantly and alternately produce instantaneous low pressure and instantaneous high pressure, and cavitation bubble constantly produces and crumbles and fall, thereby had further increased cavitation effect and improved cavitation efficient.
This is made an experiment; Test principle: make certain density aqueous solution of methylene blue with a certain amount of methylene blue reagent and distilled water; Inject storage tank as original solution; Collect through the solution behind the trailing vortex cavitation rotating generator, and measure the change value of its absorbance, obtain the change value of methylene blue concentration by the change value of absorbance.The change value of methylene blue concentration is cavitation and the change value of hydroxyl radical free radical (OH) concentration that produces, and (OH) size of concentration can reflect the cavitation effect of this invention.(OH) concentration that produces is high more, explains that cavitation effect is big more.
The course of work: like Fig. 3, shown in 4; Aqueous solution of methylene blue liquid flows into cavity 3 from charging aperture 12, under differential pressure action, gets into the gap 4 between housing 5 and the rotor 8, and rotor 8 is rotation at a high speed under the drive of rotating shaft 1; The moving boss 6 that drives on the rotor 8 rotates; Relative motion 14 takes place in liquid and moving boss 6, forms trailing vortex 13 at the rear of moving boss 6, produces local depression and forms cavitation bubble.The place ahead at contiguous moving boss 6 has high pressure, and when cavitation bubble moved to the higher-pressure region, cavitation bubble was crumbled and fall.Liquid constantly streamed moving boss, will constantly and alternately produce instantaneous low pressure and instantaneous high pressure, produced cavitation effect.Liquid streamed the quiet boss 11 on cavity 5 inwalls simultaneously, formed trailing vortex 15, also produced cavitation effect.At last, solution is flowed out by discharging opening 7, collects the solution of discharging opening 7, and hydroxyl radical free radical (OH) concentration that produces because of cavitation under the different feed liquor amounts is measured in test above repeating, and the result who under different situations, draws is like Fig. 5, shown in 6.
Except that the foregoing description, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (7)
1. trailing vortex cavitation rotating generator; Comprise rotating shaft (1), bearing assembly (2), housing (5); It is characterized in that: housing (5) both sides are provided with through bolt (10) fixing circular dull and stereotyped (9); Form circular cylindrical cavity (3) between housing (5) and circular dull and stereotyped (9), be respectively equipped with charging aperture (12) and discharging opening (7) on two circular dull and stereotyped (9), be provided with the rotor (8) that is connected with rotating shaft (1) in the middle of the cavity (3); Leave certain interval (4) between rotor (8) and housing (5), circular dull and stereotyped (9), the two ends of rotating shaft (1) are provided with bearing assembly (2).
2. trailing vortex cavitation rotating generator according to claim 1 is characterized in that: said rotor (8) is for cylindrical, and its surface is provided with a row or the moving boss (6) of many rows.
3. trailing vortex cavitation rotating generator according to claim 1 is characterized in that: said housing (5) inner surface is smooth, or is provided with a row or arranges quiet boss (11) more.
4. according to claim 2 or 3 described trailing vortex cavitation rotating generators; It is characterized in that: the shape of said boss is semicircle, half elliptic, triangle, crescent, cuboid, polygon, excellent capitate and can makes the liquid through it produce the irregularly shaped arbitrarily of trailing vortex, is the combination in any of single shape or above two or more shapes.
5. according to claim 2 or 3 described trailing vortex cavitation rotating generators, it is characterized in that: the arrangement mode of each boss is a rectangle, or isosceles triangle.
6. according to claim 2 or 3 described trailing vortex cavitation rotating generators, it is characterized in that: said boss perhaps forms other angles with its surface, place perpendicular to the surface at its place.
7. trailing vortex cavitation rotating generator according to claim 1 is characterized in that: said housing (5) and rotor (8) adopt stainless steel, carbon steel or plastics.
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| CN2011102543032A CN102350267A (en) | 2011-08-31 | 2011-08-31 | Trailing-vortex cavitation rotating generator |
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| CN2011102543032A CN102350267A (en) | 2011-08-31 | 2011-08-31 | Trailing-vortex cavitation rotating generator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106629995A (en) * | 2016-12-26 | 2017-05-10 | 浙江工业大学 | rotating liquid whistle cavitation generator |
| CN107198999A (en) * | 2017-07-14 | 2017-09-26 | 核工业理化工程研究院 | A kind of Hydrodynamic cavitation generating means and Hydrodynamic cavitation method for generation |
| CN107265562A (en) * | 2017-07-31 | 2017-10-20 | 核工业理化工程研究院 | A kind of shearing Hydrodynamic cavitation generating means and Hydrodynamic cavitation process |
| CN110902756A (en) * | 2019-11-22 | 2020-03-24 | 江苏大学 | Sewage green treatment device |
| CN110980823A (en) * | 2019-11-22 | 2020-04-10 | 江苏大学 | Jet cavitation agitator |
| CN112811483A (en) * | 2021-01-06 | 2021-05-18 | 江苏大学 | Green sewage treatment plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106629995A (en) * | 2016-12-26 | 2017-05-10 | 浙江工业大学 | rotating liquid whistle cavitation generator |
| CN107198999A (en) * | 2017-07-14 | 2017-09-26 | 核工业理化工程研究院 | A kind of Hydrodynamic cavitation generating means and Hydrodynamic cavitation method for generation |
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| CN110902756A (en) * | 2019-11-22 | 2020-03-24 | 江苏大学 | Sewage green treatment device |
| CN110980823A (en) * | 2019-11-22 | 2020-04-10 | 江苏大学 | Jet cavitation agitator |
| CN110980823B (en) * | 2019-11-22 | 2022-06-21 | 江苏大学 | Jet cavitation agitator |
| CN112811483A (en) * | 2021-01-06 | 2021-05-18 | 江苏大学 | Green sewage treatment plant |
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Application publication date: 20120215 |